<template>
  <div>
    <el-card class="box-card">
      <div slot="header" class="clearfix box-header">
        <span>么么哒后台管理</span>
      </div>
      <el-form
        :model="ruleForm"
        status-icon
        :rules="rules"
        ref="ruleForm"
        label-width="100px"
        class="demo-ruleForm"
      >
        <el-form-item label="用户名：" prop="username">
          <el-input v-model="ruleForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码：" prop="password">
          <el-input type="password" v-model="ruleForm.password"></el-input>
        </el-form-item>

        <el-form-item>
          <el-button type="primary" @click="submitForm('ruleForm')"
            >提交</el-button
          >
          <el-button @click="resetForm('ruleForm')">重置</el-button>
        </el-form-item>
      </el-form>
    </el-card>
  </div>
</template>

<script>
export default {
  name: "login",
  data: function () {
    /*
    rule 验证规则
    value 将要进行验证的字符串
    callback 验证成功或失败的回调函数
    */
    const validateUsername = (rule, value, callback) => {
      console.log(rule, value);
      //将value 去掉 左右空格
      const myvalue = value.trim();
      const reg = /^[a-zA-Z0-9]{4,16}$/;
      if (!reg.test(myvalue)) {
        //验证不通过
        callback(new Error("请输入4-16位的数字或大小写字母"));
      } else {
        //验证通过
        callback();
      }
    };
    return {
      ruleForm: {
        username: "",
        password: "",
      },
      rules: {
        //正则验证
        username: [
          { required: true, trigger: "blur", message: "请输入用户名" },
          { validator: validateUsername, trigger: "blur" }, //validator:validateUsername 自定义验证
        ],
        password: [
          { required: true, trigger: "blur", message: "请输入密码" },
          // { min: 4, max: 8, message: "密码请输入4-8位" },
        ],
      },
    };
  },
  methods: {
    //表单提交
    submitForm(formName) {
      console.log(formName);
      this.$refs[formName].validate((valid) => {
        if (valid) {
          //验证通过
          console.log("可以调用登录接口");
          //希望调用 vuex的actions 来完成登录效果
          this.$store.dispatch("LoginAC", this.ruleForm).then((res) => {
            console.log(83, res);
            this.$message({
              message: "登录成功",
              type: "success",
            });
            if (res.status == 200) {
              this.$router.push("/");
            }
          });
        } else {
          console.log("验证没通过");
        }
      });
    },
  },
};
</script>

<style lang="scss" scoped>
.box-card {
  width: 500px;
  margin: 200px auto;
  .box-header {
    background: skyblue;
    font-size: 30px;
    font-weight: bold;
    height: 100px;
    line-height: 100px;
    text-align: center;
    color: #fff;  }
}
</style>